一个网上bbs的系统设计，根据客户的具体需求，确定本系统的功能模块及各个子模块，并据此来完成数据库的设计、以及相关类等的设计工作-An online bbs system design, according to customer' s specific needs, determine the system function modules and the sub-module, and accordingly to complete the database design, and r